Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Current conditions at

Concord, Buchanan Field (KCCR)

Lat: 37.99167°NLon: 122.05194°WElev: 23.0ft.

Rain

57°F

14°C

Humidity 93%
Wind Speed S 6 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 10 Apr 10:00 PM PDT
Extended Forecast for

4 Miles E Hercules CA

  • Tonight

    Tonight: A 40 percent chance of rain, mainly before 3am.  Mostly cloudy, with a low around 52. South southwest wind around 10 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Chance Rain

  • Saturday

    Saturday: Rain and thunderstorms likely, then showers and possibly a thunderstorm after 3pm.  High near 60. South wind 10 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 60 °F

    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm.  Low around 48. South southwest wind 14 to 18 mph, with gusts as high as 29 mph.  Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 48 °F

    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm.  High near 57. South southwest wind 14 to 16 mph, with gusts as high as 24 mph.  Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 57 °F

    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of rain before 11pm.  Partly cloudy, with a low around 46. West southwest wind 6 to 14 mph, with gusts as high as 21 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 46 °F

    Chance Rain
    then Partly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Tonight
A 40 percent chance of rain, mainly before 3am. Mostly cloudy, with a low around 52. South southwest wind around 10 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. High near 60. South wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm. Low around 48. South southwest wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
Showers and possibly a thunderstorm. High near 57. South southwest wind 14 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 30 percent chance of rain before 11pm. Partly cloudy, with a low around 46. West southwest wind 6 to 14 mph, with gusts as high as 21 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly sunny, with a high near 62.
Monday Night
Mostly clear, with a low around 46.
Tuesday
Sunny, with a high near 65.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Sunny, with a high near 66.
Wednesday Night
Partly cloudy, with a low around 46.
Thursday
Sunny, with a high near 69.
Thursday Night
Clear, with a low around 47.
Friday
Sunny, with a high near 71.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Hercules CA
 38.01°N 122.18°W (Elev. 597 ft)
2:57 pm PDT Apr 10, 2026
10pm PDT Apr 10, 2026-6pm PDT Apr 17, 2026
 
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